Product Name：Smart ring
Feature：For praying
Color：Black,white,green,pink, dark red
Function
Blue tooth: Blue tooth 5.1
Matching Systems:Android 5.1 or iOS 10.0 or later
Screen: OLED，0.49 inch，72*40
Battery capacity:40mAh
Material:plastic
Button:1 button
Charging port: Pogo Pin Theoretical working
hours：up to 7 days in typical usage/up to 30 days in basic usage
Sensors：Vibration Motor
Colors: Brown Pink Green Black White
Sizes: 20mm,18mm
